Solitude (Working Title) is a PSP and PC game using a heavily modified Quake engine, expanding upon the story of Halo: Combat Evolved. Expect a great, brand new single player story and all of the most popular multiplayer modes from Halo: CE! Our team is working hard to bring the game to you as fast as possible so be sure to stay tuned for any new updates. More information can be found on our site at www.halosolitude.com. Note: We are NOT ripping anything from any of Halos! All our models and textures are our own, made by using the original Halo art only as reference.

let me start with saying that i LOVE this project and will track if for sure, (love Quake and Halo). that said i am surprised you did choose for the quake engine, and not the quake2 engine. i mapped with that engine a few years ago and it does look better as the older quake engine, what is of course logical.
and maybe it is because i map myself that i am not all that pleased with how the maps look so far, from what i can see from the screens). it's all so blocky and empty. i know the editor of quake is not that good with brushes as editors are these days, still, you can make much more detailed map as what is shown now. they all have a empty mp arena look, and this game will have a brand new Sp game mode.

please don't get me wrong, i love the idea behind this game and i will track it. but wouldn't it be better to take a bit newer engine to make this game. Halo on the quake engine does not match all that well.

hope you guys will finish and release this project, because it is quit ambitious and will take a huge time and effort to complete. and to many people start great projects, just to never hear of them again, what is a real waste. so, please keep posting and surprising us!!

Well, thanks for your feedback. However, the main reason we picked Quake was because of it's portability, and availability on systems like the psp. I must stress, this is a very early WIP; the final version will be cluttered with mining equipment and debris.

Secondly, Dark places is a jewel of an engine. Which I personally think with good enough of a team, could match now-a-days standard games.

alien arena is built on the quake 2 engine and the quake 2 engine even runs on the ds almost completely smooth and on the psp its very fast you should have used that but then again i do love the dark-places engine myself especially the lighting

Yea Alien Arena is based off Quake 2s engine but it is heavily modified.
A major plus imo for the Quake 1 engine is that it uses qauke c to control the game logic as opposed to plain c. qc may not be the best language out there but its simple and is capable of getting the job done (and can easy be expanded with builtins if some thing need to be doe in the engine). Plus because it simple its easy to learn.
There is not a huge difference between the engines, it just comes down to preference really as remarkable things can be down with either engine, just look at Overdose or Darkplaces.

Hey, don't forget to add a few dead construction workers with what looks like plasma burns on them. Make it rock men! Also! DO NOT RUSH IT! Make it perfect. I'm making a PC game and I take 6 months for polish. Getting everything all the way down to the littleist detail to the point where I do believe and I know it is absolutely perfect.